Fishery Resource Evaluation with Hydroacoustic and Remote Sensing in Yangjiang Coastal Waters in Summer

Yangjiang coastal waters provide vital spawning grounds, feeding and nursery areas for many commercial fish species. It is important to understand the spatial distribution of management, development, protection fishery resources. In this study, an acoustic survey was conducted from 29 July 5 June 2021. Meanwhile, remote sensing data were collected, including sea surface temperature (SST), chlorophyll concentration (Chla), salinity (SSS), anomaly (SSTA). The density biomass analyzed based on using geostatistical method. Combining with data, we explored relation between environment GAMs model. results showed that are mainly small individuals. horizontal distri-bution had a characteristic high nearshore low offshore. vertical direc-tion, distributed in surface-middle layers shallow (<10 m) middle-bottom deeper (>10 m), respectively. deviance explained optimal GAM model 59.2%. SST, Chla, SSS, longitude significant factors influencing distribu-tion contribution 35.3%, 11.8%, 6.5%, 5.6%, This study can pro-vide scientific foundation support rational developing protecting re-sources waters.